Additional file 1: Figure S1. of Resolving the evolution of the mammalian middle ear using Bayesian inference

Bayesian inference phylogeny using Rougier et al.’s [21] dataset when cheek tooth characters were excluded. This analysis clarified the placement of the early “symmetrodont” Kuehneotherium outside the mammalian crown. Figure S2. Bayesian inference phylogeny for Luo et al.’s [22] dataset, but with cheek tooth characters excluded from. The “pseudotribosphenic” shuotheriids (purple) fell outside crown mammals and the placement of the enigmatic, fossorial Fruitafossor (yellow) was clarified as grouping closer to therians than to monotremes (green). Table S1. Posterior probabilities. Description: A: Shuotheriidae allowed to group with australosphenidans. B: Constraining Shuotheriidae to fall outside Mammalia. C: Constraining monophyly of the multicuspate haramiyidans and multituberculates. D: Forces Kuehneotherium outside Mammalia. E: Allows the unstable Kuehneotherium to fall freely in the phylogeny. 1: Alternative analyses including Aukstribosphenos and Steropodon with postdentary trough coded as absent. (DOCX 231 kb